Crownring: Bicycling Made Easy

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Answers to Crownring questions on the left.
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Crownring

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Gemini AI

While an AI can only comment given the information it receives, it can isolate and iterate based on factual accuracy of the information it is provided. As I gave it the results of my testing it was able to determine the effect that Crownring could have on bicycles and the climate initiative.

Gemini AI V3 (Google)

Benefits of the Crownring on an e-bike

Extended battery range: By making pedaling easier, the Crownring encourages the rider to pedal more, thus extending the battery range. The motor will need to draw less power from the battery for the same level of assistance.
Encourages more human input: Easier pedaling means less fatigue, which makes the rider more likely to pedal consistently over longer distances. On a pedal-assist e-bike, this rider effort is directly correlated to reduced motor output, conserving battery power.
Less burden on the battery: Conserving battery power by pedaling more means the battery goes through fewer charge-discharge cycles over its lifetime. This reduces overall energy consumption and helps prolong the battery's health.

Benefits of the Crownring on an unassisted bike

Higher mechanical efficiency: The Crownring directly increases the bike's mechanical efficiency, meaning less of the rider's physical energy is wasted.
Encourages longer, more frequent rides: The reduced effort makes riding more enjoyable and less fatiguing, which can lead to riders choosing to cycle more often and for longer distances.
Reduced food-related emissions: By making the human power source more efficient, the
Crownring helps minimize the marginal food calories required for any given trip. A lower food footprint is a key factor in reducing overall lifecycle emissions, especially compared to less-efficient unassisted bikes.

Conclusion: A win for all cyclists

The Crownring is a beneficial product for both types of bicycles. Its effectiveness on an e-bike, particularly a direct-drive model, would manifest as extended battery life and range due to increased rider input. For an unassisted bike, it simply makes the human engine more efficient.

Ultimately, Crownring improves the performance and appeal of both transportation modes. This serves the broader goal of encouraging more people to ride bikes—a critical action for overall climate conservation, regardless of whether a battery is involved.

Text updated October 2, 2025

This page was generataed by Gemini AI V4.

Crownring: Reclaim the Joy of Biking. Effortlessly.

Crownring was born out of a personal challenge to overcome chronic illness. It is more than a chainring—it is a proof-of-concept engineered to make cycling accessible, joyful, and easy for everyone.

The Breakthrough: Perfectly Timed Power

Crownring is not a new gear; it is a new concept. It precisely aligns with your body's natural strength, delivering a boost of power exactly when you need it. Crownring uses your strongest posture to boost kinetic energy. Further, it reduces the strain at your weakest posture.The result is simple: Less strain, more endurance, and an undeniable feeling of freedom.

Crownring Delivers	The Rider Gains
25% Less Effort	Conquer Hills: Makes climbs feel simple and helps to extend battery range on e-bikes.
Smooth, Consistent Power	Reduced Fatigue: Shortens the 'dead zone,' making starting and cruising less effort.
Increased Endurance	Reduced Time Under Tension: Shortens effort periods without sacrificing speed.
Universal Potential	Future Upgrade: Engineered to be the new standard for nearly any bicycle.

A Project with a Higher Purpose 🌍

We literally need bicycles to beat the climate tipping point. Crownring is a simple chainring replacement that will encourage more daily trips by bike. By making cycling easier, we make it the better choice for transportation, helping you to reduce carbon emissions and pollution globally.

Ready to See the Proof?

The technology is real, and the next step is building the inventory and partnerships to make it available everywhere.

Explore the Evidence:

Q & A: Get the answers to the most common questions about the technology and its efficiency.
Inventing Crownring: Read the full, personal story behind the invention and see the original demo test results.
Efficiency: Dive into the mechanics to understand exactly why Crownring delivers more power with less effort.

Text updated December 1, 2025 - Credit to Google and their Gemini AI

Journal

Inventing Crownring

Progress Report

Recumbent Build

Progress 2025